72 F2B ENGINE T RAKKER E URO 4/5 Checking connecting rod Checking bending - - B Base q November 2006 Print 603.93.641 Figure 103 (Demonstration) 61 ecking axis alignment eck the alignment of the axes of the connecting rods ng a suitable device (5), proceeding as follows: Fit the connecting rod (1) on the spindle of the tool and lock it with the screw (4). Set the spindle (3)on the V-prisms,resting the connect rod (1) on the stop bar (2). ecking torsion Figure 104 (Demonstration) 61 eck the torsion of the connecting rod (5) by compari o points (A and B) of the pin (3) on the horizontal pla the axis of the connecting rod.
sition the mount (1) of the dial gauge (2) so that th -loads by approx. 0.5 mm on the pin (3) at point A a o the dial gauge (2). Shift the spindle (4) with t nnecting rod (5) and compare any deviation on t posite side B of the pin (3): the difference between A a must be no greater than 0.08 mm. 696 (1) (5) ing 694 ng ne is nd he he nd Figure 105 (Demonstration) 61695 Check the bending of the connecting rod (5) by comparing two points C and D of the pin (3) on the vertical plane of the axis of the connecting rod. Position the vertical mount (1) of the dial gauge (2) so that this rests on the pin (3) at point C.
Swing the connecting rod backwards and forwards seeking the highest position of the pin and in this condition zero the dial gauge (2). Shift the spindle (4) with the connecting rod (5) and repeat the check on the highest point on the opposite side D of the pin (3). The difference between point C and point D must be no greater than 0.08 mm. Fitting the connecting rod - piston assembly Carry out the steps for removal described on pages 68 and 69 in reverse order. NOTE The connecting rod screws can be reused as long as the diameter of the thread is not less than 13.4 mm. Fitting the piston rings Figure 106 49029 To fit the piston rings (1) on the piston (2) use the pliers 99360184 (3).
The rings need to be mounted with the word yTOPy (4) facing upwards. Direct the ring openings so they are staggered 120 apart.